| Radial Road 1 | |
| Alternate Name: | R-1 Road |
| Country: | PHL |
| Image Notes: | Roxas Boulevard in Pasay, a portion of Radial Road 1 |
| Maint: | the Department of Public Works and Highways, the Metropolitan Manila Development Authority, and Cavite Infrastructure Corporation |
| Length Km: | 42.67 |
| Allocation: | |
| Direction A: | North |
| Terminus A: | Anda Circle in Manila |
| Direction B: | South |
| Terminus B: | in Naic, Cavite |
| Provinces: | Cavite |
| Towns: | Kawit, Naic, Noveleta, and Tanza |
| Cities: | Bacoor, General Trias, Imus, Las Piñas, Manila, Parañaque, and Pasay |
Radial Road 1 (R-1), informally known as the R-1 Road, is a network of roads and bridges that all together form the first arterial road of Metro Manila in the Philippines.[1] Spanning some 42.67km (26.51miles), it connects the cities and municipalities of Bacoor, General Trias, Imus, Kawit, Las Piñas, Manila, Naic, Noveleta, Parañaque, Pasay, and Tanza in Cavite and Metro Manila.
See main article: Bonifacio Drive. Between Anda Circle and Padre Burgos Avenue, R-1 is known as Bonifacio Drive. It serves the districts of Intramuros and Port Area and meets Roxas Boulevard in Rizal Park.
See main article: Roxas Boulevard. R-1 becomes Roxas Boulevard after intersecting with Padre Burgos Avenue. This section of R-1 passes through the kilometer zero of the Philippines in Rizal Park. It is a waterfront promenade which leads out of Ermita and Malate in the city of Manila into Pasay and Parañaque. Roxas Boulevard ends at the junction with NAIA Road and Seaside Drive.
See main article: Manila–Cavite Expressway. Between the NAIA Road and Covelandia Road in Kawit, Cavite, R-1 is known as the Manila–Cavite Expressway (also known as Coastal Road and CAVITEX). This toll road connects Parañaque with Las Piñas and leaves Metro Manila for Bacoor and Kawit in the province of Cavite.
R-1 then merges with Covelandia Road briefly until it meets Antero Soriano Highway at the intersection with Tirona Highway.
See main article: Antero Soriano Highway. R-1 is known as the Antero Soriano Highway from the Covelandia Road's terminus in Kawit to Governor's Drive in Naic. It connects the Cavite municipalities of Noveleta, Rosario, Tanza, and the cities of General Trias, and Imus along the coast of Manila Bay in Cavite.